Dielectric elastomer generators (DEGs) are devices that harvest energy from
oscillations. We investigate the dynamic behavior of dielectric viscoelastomers in soft
generators. Using a viscohyperelastic theoretical model to characterize the relaxation
phenomena of the materials, the effects of various factors on the forced oscillation of
the system are revealed. According to different failure modes, a three-dimensional
presentation of the allowable domain in the electrical boundary condition, the
amplitude of the oscillator, and the prestretch of the system are also depicted.
Finally, an optimal design of DEGs is suggested combined with an energy dissipation
analysis.
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